Patent · US Expired

pH-regulating Cellulose products

US4634438A · kind A · utility

16Cited by

5References

13Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Scarlet Sustmann · Viersen, DE
Ingo G. Marini · Lenzing, AT

Key dates

Filing date	Oct 12, 1984
Grant date	Jan 6, 1987
Priority date	—
Expiry date	Oct 12, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S604/904
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Hygienic products of various types, all comprising as their operative body contact portion a fiber mass of acidic, modified, pH-regulating, cellulose.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.